Furnace regulator



June 10, .1924.

. 1,496,785 w. RAEBURN j FURNACE REGULATOR Filed Jan. 1924 Patented June 10, 1924.

WILLIAM RAEBURN, OF WATERBURY, CONNECTICUT, ASSIGNOP, TO THE MATTATUCK MANUFACTURING COMPANY, OF WATERIBURY, CQIQ'TQ'JEZQTIC?UI'3 A CORPORATION OF CONNECTICUT.

FURNACE REGULATOR.

Application filed January 3, 1924; Serial No. 684,160.

To all whom it may concern:

Be it known that I, WILLIAM RAEBURN, a citizen of the United States, residing at aterbury, county of New Haven, State of Connecticut, have invented certain new and useful Improvements in Furnace Regulators, of which the following is a full, clear and exact description.

My invention relates to furnace regulators and has for its object to produce a new and improved actuating device. It further has for its object to produce a furnace regulating device having stationary and movable means for supporting and adjusting the chain, the stationary part assisting in holding the chain in adjusted position.

The following is a description of my invention reference being had to the accompanying draw1ngs,'1n which,

Figure 1 is a front elevation of a furnace.

regulator embodying my invention;

Fig. 2 is a side elevation of the same;

Fig. 3 is a rear elevation with a portion of the stationary member broken away; and

Fig. 4 is a section on the broken line 44, Fig. 1.

deferring more particularly to the drawings 2 is the base member of the regulator having perforated ears 4 forsecuring the same in position. This base is struck up from sheet metal so as to have a re-entrant portion 6, the periphery 8 of which forms a drum whose surface is at right angles to the flange 10 from which the ears 4 extend. 12-12 are two portions extending from the upper part of the periphery of the flange 10 and integral therewith. These portions have at their lower portions outturned ends 14 so as not to catch the regulator chain 16. 18 is a movable sheet metal indicating actuating u'ieniber secured to the base portion by a pivot-post. 20 which is surrounded by the flat sheet metal spring 22, the ends of which are held against the inner face of the re-entrant port-ion of the base by a cotter pin 24. The spring 22 acts to hold the portion 26 of the inner face of the indicating member in frictional engagement with the outer face of the base and tends to thus hold the indicating member in any position in which it may be adjusted. The indicating member is provided with an integral hook 28 upon which is hooked one of the links of the chain 16. It is also grovided with integral lugs 30, one of which engages with one of the stops 34, formed integral with the base, when the indicating member is turned to one or the other of its extreme positions. The chain 16 is moved in. one position or the other-by turning'the indicating member 18, sliding'around on the drum 8. In order that the indicating member may be more easily grasped for turning, portions thereof may be cut out and turned up as shown at 36 36, aflording convenient thumb and finger pieces.

In order to indicate the effect which may be expected from turning the indicator, I provide the indicator with three openings 38, 40 and 42, spaced apart 120, and form upon the base portion legends such as Open, Closed, Check which are so situated as to appear simultaneously be neath the respective openings. The intermediate opening corresponding to the radius at which the hook 28 is located is provided with an index finger 44, which points at the legend describing the resulting action upon the furnace. Thus the parts, as shown in Fig. 1 of the regulator, are set for checking the furnace. If the indicator is moved 120 counter-cloclnvise the drafts would be closed and if moved from thence 120 counter-clockwise the drafts would be open, provided the chains'are connected to the furnace in the usual manner.

The contact of the chain 16 with the drum-like periphery 8 of the stationary member is a Very important feature in my invention and necessary for the attaining of its most important object, for the reason that it co-acts to a large extent with the frictional surface 26 and renders the action of the regulator more certain and positive. It further makes it possible to use a much lighter spring 22 on account of its peculiar action. Thus when the indicator is in the position shown in Fig. 1, the weight of the left-hand portion of the chain 16 holds the portion of the chain extending from the hook 28 about two-thirds around the drum counter-clockwise in contact with the drum. This engagement is a frictional engagement and acts as a brake, assisting and. holding the indicator in the position in which it isset. A similar result takes place when the index 44 points to the word Open. Whenthe index points to the word Closed the" Ice braking efifect between the chain and the drum-like portion of the base.

Not only does my regulator have the novel and useful braking action above described, but except for the chain 16, rivet 20 and pin 24 it is made out of sheet metal, there being in addition simply three sheet metal. parts.

As will be evident to those skilled in the art, my invention permits of various modifications without departing from the spirit thereof or the scope of the appended claims.

lVhat I claim is:

1. In a device of the character described the combination of a base member having a stationary drum-like forwardly projecting portion, a rotatable actuating member mounted thereon, a pivot connecting said two members, achain connected to said actuating member and bearing on said projecting drum-like portion so as to make frictional engagement therewith.

2. In a device oi the character described the combination or a base member having a stationary drum-like. forwardly projecting portion, a rotatable actuating member mounted thereon, a pivot connecting said two members, a chain connected to said actuating member and. bearing on said projerting drum-like portion so as to make frictional engagement therewith, and a spring acting upon said pivot and holding said actuating member and base member in trictional engagement.

3. In. a device of the character described the combination of a base member having a stationary drum-like forwardly projecting portion, a rotatable actuating member mounted thereon, a pivot connecting said messes two members, a chain connected to said ac tuating mei nber and bearing on said projecting drum-like portion so as to make frictional engagement therewith, said base and actuating members having one a dial and the other an index cooperating with said dial.

4. In a device of the character described the combination of a base member having a stationary drum-like forwardly projecting portion, a rotatable actuating member mounted thereon, a pivot connecting said two members, a chain connected to said actuating member and bearing on said project; ing drum-like portion so as to make frictional engagement therewith, and a spring acting upon said pivot and holding said actuating member and base member in trictional engagement, said base member having a dial and said actuating member having openings disclosing the markings on said dial, and an index cooperating with said dial.

5. In a device of the character described the combination of a base member having a stationary drum-like forwardly projecting portion, a rotatable actuating member mounted thereon, a pivot connecting said two members, achain connected to said actuating member and: bearing on said project ing drum-like portion so as to make itrietional engagement therewith, said base and actuating members having one a dial and the other an index cooperating with said dial, said base and actuating members having stops for limiting the movement of said actuating member, and said actuating member having integral thumb and finger pieces.

WlLLIAlit RAEBURN. 

